These are all sites with free professional literature and subscriptions to receive continual updates as new research and developments emerge:

Journals, Councils, and Subscriptions:

//Tech & Learning//

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//T.H.E Journal//

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SmartBrief on EdTech

receive daily news about developments in educational technology

Council on 21st Century Learning

Intriguing Articles:

Teaching Up for Excellence (Seven Guided Principles for "Teaching Up")
Clustered for Success - clustering groups enables gifted students, as well as other students, to make meaningful progress